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  • Title: Congenital adenomatoid malformation of the lung: current management and prognosis.
    Author: Neilson IR, Russo P, Laberge JM, Filiatrault D, Nguyen LT, Collin PP, Guttman FM.
    Journal: J Pediatr Surg; 1991 Aug; 26(8):975-80; discussion 980-1. PubMed ID: 1919992.
    Abstract:
    A retrospective 10-year review of congenital adenomatoid malformation (CAM) included 10 cases diagnosed in utero by ultrasound and 13 cases that presented postnatally. Two prenatally diagnosed cases were aborted because of associated lethal anomalies. All remaining patients underwent resection. Up to one third of all cases, whether diagnosed prenatally or postnatally, were asymptomatic. Resection is recommended to avoid respiratory distress, infection, or associated malignancy. There were 5 nonsurvivors, including 2 therapeutic abortions and 3 who died postoperatively. All had either polyhydramnios or ascites. All patients who died postoperatively had a respiratory arrest at birth and underwent immediate lobectomy. All died on the first day of life after a brief period and were found to have associated pulmonary hypoplasia. One had undergone a prenatal transthoracic cyst aspiration at 34 weeks gestation in an attempt to allow lung growth and prevent premature labor. Prenatal ultrasound findings suggestive of poor prognosis included polyhydramnios, ascites, mediastinal shift, and noncystic type III CAM. However, there is a spectrum of severity of CAM. The lesion can either regress and be asymptomatic at birth, or it can progress to cause either fetal death from hydrops or neonatal death caused by associated pulmonary hypoplasia. These findings should be considered in prenatal counseling for CAM.
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